US1735481A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Flooding method for recovering oil
Assignee: Standard Oil Development Co
•
Filing: 1927-09-17
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Granted: 1929-11-12
•
Expires: 1947-09-17
Abstract
No abstract record available.
Inventors
- 👤 Lester C Uren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 16:37
CPC Classifications
C; C09; C09K; C09K8/00; C09K8/58; E; E21; E21B; E21B43/00; E21B43/16; E21B43/20; E21C; E21C41/00; E21C41/16; E21C41/24
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1932-11-11 | 1933-05-13 | 1933-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1936-11-11 | 1937-05-13 | 1937-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1940-11-11 | 1941-05-13 | 1941-11-12 | $7700.00 | Window Closed / Lapsed |